Definition of punitive in the AudioEnglish.org Dictionary. Meaning of punitive. What does punitive mean? Proper usage and pronunciation (in phonetic transcription) of the word punitive. Information about punitive in the AudioEnglish.org dictionary, synonyms and antonyms. English for Beginners Practical English Travel English Telephone English Banking English Accounting English Dictionary
HIV (human immunodeficiency virus) is a virus that attacks the immune system, the body's natural defense system. Without a strong immune system, the body has trouble fighting off disease. Both the virus and the infection it causes are called HIV. White blood cells are an important part of the immune system.HIV infects and destroys certain white blood cells called CD4+ cells.ithout a strong immune system, the body has trouble fighting off disease. Both the virus and the infection it causes are called HIV. White blood cells are an important part of the immune system. HIV infects and destroys certain white blood cells called CD4+ cells.
All viruses of a type are identical and their particles have a cubical, helical or complex structure. A virus is a biological agent that reproduces inside the cells of living hosts. When infected by a virus, a host cell is forced to produce thousands of identical copies of the original virus at an extraordinary rate. Unlike most living things, viruses do not have cells that divide; new viruses are assembled in the infected host cell.